Suspension - Noise From the Rear Auxiliary Leaf Springs

91chevy24

GMC NUMBER: 92-3D-06

GROUP: 3D Rear Suspension

DATE: August, 1991

CORPORATE NUMBER: 163401


SUBJECT: REAR AUXILIARY SPRING NOISE

MODELS: 1991-92 C3 AND K3 WITH DUAL REAR WHEELS


Some 1991-92 C3 and K3 trucks with dual rear wheels may experience a noise from the rear auxiliary leaf springs. This noise is more noticeable on rough roads when the truck is unloaded. The noise is caused by contact between the auxiliary leaf spring and the auxiliary spring stop.

This condition can be corrected by installing an insulator on each end of the auxiliary leaf spring. It may be necessary to raise the vehicle by the frame to install the inserts. A strip of nylon is attached to one side of the insert. When installed, the nylon should face up toward the the spring stop.


SERVICE PARTS INFORMATION:

Part Quantity
Number Model
15604174 C3, K3 with dual rear wheels 4

Parts are currently available from GMSPO.

WARRANTY INFORMATION For vehicles repaired under warranty use:

Labor Operation: T7760

Labor Time: 0.3 hrs.